Besan or ‘Sunnipindi’ or whatever scrub you may use like masoor dal (red lentils) or rice flour polish your skin by removing the dead skin. And, in this process, they reveal a new layer of skin. Thus, the result is a clean glowing skin. As a matter of fact, besan is extremely useful in getting rid of dark spots and other conditions of the skin and gives a flawless complexion.But, if you venture out in the sun unprotected by sunscreen, your newly revealed skin is going to be subjected to a lot of environmental factors like dust, pollution and sun. The result is dull and tired looking dark skin. Thus, the connection that besan turns skin black. So, always wear a sunscreen. And, clean your skin well after a session in the sun.